Патент USA US2137257код для вставки
Nov. 22,1938. H. E. WHITE ‘ 2,137,257 METHOD OF MAKING WIRE MESH Original Filed April 20, 1936 8 Sheets-Sheet 1 u J‘WCMMI lib-(WHITE. I Nov. 22, 1938. ‘ H. E. WHITE - ' 2,137,257 ‘ METHOD OF MAKING WIRE mass ’ Original: Filed April 20, use, w‘ a‘ Sheets-Sheet 2 i ' . 1% EDWIN!!! ‘II III _ _ ‘B ’ '\ > , “5-5 ' ® I, '4 ~ lummlv R 0 a] 8 \; _._:>.l1. & NI g . ‘ ‘ . * 8 ' ; , I §\ § ‘1340 A‘. o _ '. L. - ".5. WHITE We” Npv.'22, 1938. -- . _ H. E, WHITE‘ ' ‘ 2,137,257 METIfOD or MAKING WIRE MESH Original Filed April 20, 1936 8 Sheets-‘Sheet 5 Nov. 22', 1938. H. 5.. 'wHn-E ’ 2,137,257 METHOD OF MAKING WIRE MESH Original Filed April 20, 1936 ~i 8 Sheets-Sheet 4 Nov. 22,1938. H. E. WHITE'_ 7 _ , Zia-137,257 ‘METHOD OF MAKING WIRE MESH Original’ Filed April 20, 1936 I s Sh'eet's-S-heet 5’ I A awe-MM 1-]. E. Wm TE , W; » _ Nov. 23, 1938. ' ' I H. E, WHITE . METHOD OF MAKING WIRE MESH ' Original Filed April 20, 1956 N‘g.8?vi"aw Y ‘2,137,251 s Sheets-Sheet 6 w ' ll.E-W/I/TE__ Nov. 22, 1938. > H. E. WHITE ' } 12,137,257‘ METHOD OF MAKING WIRE MESH ' ' > Original Filed April 20, 1936 e Sheets-Sheet 7 Nov. 22, 1938. ‘ - H. E. WHITE ' 2,137,257 ' METHOD OIF MAKIILTG WIREv MESH ‘ Original Filed April 20‘, 1936 ' 8 Sheéts-Shéet 8 2,137,251 Patented Nov. 22, 1938 UNITED STATES PATENT OFFICE 2,137,257 METHOD OF MAKING WIRE MESH Herbert E. White. San Francisco, Calif., assignor to E. H. Edwards Company, a ' corporation of California Original application April 20, 1936, Serial No. 75,488. Divided and this application Novem , ber 13, 1936, Serial No. 110,745 g 8 Claims. ~(c1. 140-112) completed fabric-in which the meshes areoi half tion, Serial No. 75,488, ?ledApril 20, 1936. In the size of those of the tubular fabric. The present application is a division of applica that application is described and claimed a ma chine, by means of which the method is set forth In the accompanying drawings: . ' Figure 1 is an elevation of the complete ma 5 and claimed in this application. chine. > The invention relates to a method of making - Figure 2 is an enlarged plan view of the. strand-. an opened mesh wire fabric of crossedstrands, _ laying, ?attening and vwelding mechanism. the strands being in continuous lengths through ' out the fabric. Thekfabric, which is produced 10 by this method, is composed of a plurality of layers, each layer being composed, in turn, of a plurality of strands that extend diagonally across the fabric; and which are at the selvage ' edge rebent to extend as a different layer across 15 the fabric in the opposite direction, and at a re ‘verse angle. The different layers of the fabric lie, one within the other, and, the strands are secured together, as by a welding at each crossing point. The object of the invention is to provide a method, 'whereby such a fabric can be made from continuous strands of wire. Another object is to provide a’ method, whereby the strands are formed into the fabric in a simple 25 manner by ?rst forming a tubular body, and then ?attening the body, and afterwards welding the 30 3 ' ' ' Figure 4 is an enlarged vertical sectional view 10 showing the structure of the strand-supplying reels. ' _ Figure 4a is a similar view showing the strand laying mechanism and the mandrel. Figure 5 is a detail sectional view of one of the 15 strand-laying arms. Figure 6 is a sectional view taken on the, line ~6—-B of Figure 4a. _ Figure 7 is a sectional view taken on the line 20 crossing strands together. Figure 3 is a schematic plan view showing the drivingmechanism. , , The method of making this fabric comprises brie?y, laying the strands in the form of coils - upon a tubular mandrel, having a travelling sur face, whereby the coils are caused, as they are carried away from the strand-laying mechanism, to assume the form of spirals. Thereafter the tubular fabric is drawn to the mandrel and col lapsed into the form of a ?at sheet. The strands, which are laid on the mandrel, make up succes sive layers, each comprising a plurality of the strands. The successive layers, which are laid 40 about the mandrel, are wound in opposite direc tions so that the spiral strands of one layer cross 'l--'l of Figure 4a. ' ' . Figure 8 is an enlarged detail view partly in section, showing the fabric-carrying structure of the mandrel. > , - " Figure 9 is a perspective view of the conveyor chain shown in Figure 8. 25 Figure 10 is a cross sectional view on the line Ill-40 of Figure 4a. ” Figure 11 is a sectional view on the line Iii-H of Figure 10. . Figure 12 is an enlarged plan view of the ?at 30 tening mechanism. I . Figure 13 is a detail view of the strand-gripping mechanism of the ?attening means. . ‘ Figures 14 and 15 are detail views illustrating the operation of the strand-gripping means. 35 Figure 16 is a plan view showing the operation of the strand-gripping means as the fabric is carried through the welder. Figure 17 is a detail plan view of the strand gripping devices. - 40 Figure 18 is a sectional view on the line lB-iB those of the adjacent layer.‘ When the tubular Figure 17. ' structure made up of‘ these crossing spiral coils of Figure 19 is a view taken on the line lQ-IQ of is collapsed, the layers forming the wall of half Figure 1. 45 of the tubular structure become superposed on Figure 20 is a sectional view on the line 20-20 45 the layers forming the other half, and as each of-Figure l9. ' ‘ half of the tubular fabric is composed of strands 21 is a detail view of the lower electrode in crossing layers, the ?attened fabric consists of Figure the welder. of a fabric of double the number of layers form Figure 22 is a plan view of the electrode of the 50 ing the wall of the tubular structure; The tubu 50 welder. _ . lar structure is so wound and the collapsing op Figure 23 is a plan view of a section of fabric eration is so performed, that when the layers are produced by the method. thus superposed, those forming one half oi’ the Figure 24 is a perspective view of a section of tubular structure are positioned between those, the fabric. ' 55 that form the other half, this resulting in a The drawings illustrate a mechanism, by means 55 2 2,187,257 of which the method may be performed. Describ ing them more particularly, the machine may be divided into three parts, generally being a strand supplying mechanism 23, a fabric-forming mech anism 23, and ‘welding mechanism 21. The strand-supplying mechanism may comprise a plurality of reels 23 revolubly mounted with re spect to each other and positioned in end-to-end relation. Referring toFlgure 4, it will be seen 10 that each reel includes a plurality of horizontally disposed bars 23 that support, respectively, a plurality of strand-supplying spools 33. The bars As the two reels revolve in opposite directions, it will be appreciated that strands are laid by the arms 43 and 46 in the form of coils upon a mandrel 33 which is disposed in proper relation in front of the forward end of the forward reel. 3 The mandrel 33 is so constructed as to carry the coils forward as they are laid, causing them to assume the form of spiral coils, those being laid by the arms 43 extending in the opposite direc tion, and therefore crossing those laid by the 10 arms 43. ' The mandrel is constructed as follows. A shaft ' 23 may also be provided with strand guides 3i 3i extends from the rear of the machine to the through which the strands are led as they are 1 forward end of the mandrel, running through the 15 fed to the fabric-forming mechanism. The bars 23 of the forward reel or the one towards the fabric-forming mechanism, arev supported by heads 32 and 33 that are in turn supported and secured to a tubular shaft 34.‘ The bars of the rearward reel are supported by heads 33 and 33 which are supported by and secured to 'a tubular tubular shaft 34 and through the center of the 15’ mandrel. Upon this shaft 6i are mounted at the front and rear'end of the mandrel, respec tively, stationary heads 62 and 33. Supported upon the heads 32 and 63 are sprocket wheels 64, those of the respective heads being in aligned relation. Sprocket chains 63 pass about these shaft 31, through which the tubular shaft 34 sprocket wheels axially of the mandrel and the extends and which is rotatable with respect puter reaches of these chains form the mandrel thereto. Suitable bearings, as at 33, may be inter surface upon which the strands are laid. posed between the shaft 34 and the structure of Referring to Figures 6 and 8, it will be seen the rearward reel, through which it passes. that the sprocket chains 63 are provided at proper Surrounding the forward end of the forward - intervals with outstanding lugs 66 which engage ' reel and revoluble with respect to its head 33, as the strands as they are laid. As the strands are shown in Figure 4a, is a strand-laying arm laid by the arms 43 and 46 they are wrapped carrylng ring-33. Between this ring 33 and the around the body formed by the outer surfaces of head 33 of the rearward reel are tubular guides the sprocket chains 63 and are engaged by the 43, through which the strands are led from the lugs 66. The sprocket chains are driven to move spools of the rearward reel. Suitable tie bolts, the outer reaches thereof in a forward direction, as at 4i, may secure the ring 33 to the head 33. carrying the tubular structure, which is formed _ A plurality of spools 33 are supported upon each by the laying of the strands towards the discharge of the bars 23 of each of the reels. Each tubu end of the machine. lar guide 43 is associated with each of the bars ' The sprocket chains 63 may be driven in the 23 of the rearward reel to accommodate the following manner. The head 33 of the forward strands drawn from the spools of that particular ' reel may be provided with a tubular extension 31 bar. Associated with each of the tubular guides that extends to a point adjacent the rearward and supported by the ring 33 is a strand-laying‘ head 63 of the mandrel. At its forward end the arm 43. AsshowninFigureS thesearms43 are extension 31 is provided with a bevel gear 63. The bracket-like in shape. and extend axially of the sprocket wheels 64 of the rearward head 33 of the ring 33. For each of the strands 44, is a guide ' mandrel may be associated with bevel gears 63 wheel 43, about which the strand passes. Similar , mounted upon the ends of the shafts which supstrand-laying arms 43 are mounted upon the head port the sprocket wheels.‘ The bevel gears 63 en 33 of the forward reel, there being one arm 43 gage bevel gears _'i3 upon shafts ‘ii supported in associated with each bar 23 of this reel. The suitable brackets 12 carried by the‘ head 33, and strands are led through the guides 3!, supported carrying at their inner ends bevelgears 13 mesh by the bars 23, and through a guide 41, upon the ing, in turn, with the bevel gears'33. It will be head to the arm 43. seen tliat as the head 63 is driven by the'drive The drive for these strand-supplying reels com shaft, 43, the gear 33 will revolve, driving the prises a main shaft 43, driven through suitable sprocket wheels 34‘ through the bevel gears 13, gearing by a motor 43. As shown in Figure .4, the tubular shaft 34 extends rearwardly through shaft ‘ii, bevel gears ‘I13 and 63. ' 20 25 30 35 40 . 45 50 - ported in a bearing 33. Upon the'shaft 34 is therearhead 33 oftherearwardreeLandism When the tubular fabric formed by the above 55 described mechanism reaches the end of the chain 63, it is subjected to a ?attening operation. This secured a worm gear 3i that meshes with a worm may be performed by the following mechanism. ' 32 geared through bevel (gears 33 to the drive shaft 43. - p v ' _ The rear head 33 of the rearward drum carries Upon the shaft 6i are mounted a plurality of spaced supports 14 that support- a ?at tapered 60 mandrel 13. As shown in Figure2, the-‘width of a worm gear 34 about its periphery. This gear ‘ the mandrel 13 increases toward the forward or ' 34 is driven by a worm 33 which is geared through discharge end of the machine. As the tubular bevel gears 33, to the shaft 43. ‘The bevel gears fabric ‘advances over the tapered mandrel 13, it -33and 33aresodisposedthatthe worms 32 is ?attened and the layers forming the upper half 65 and 33 are driven in opposite directions, so that of the tubular structure are caused to bridge those the forward and rearward reels revolve oppo ‘forming the lower half. ' ' sitely as they are driven by the shaft 43. The As it is desirable to maintain the cross strands arm-carrying ring 33 bears about its outer pe in ?xed relation duringthis operation, the fol-' 70 riphery.’ a worm gear 31 that is meshed with a alowing mechanismmay be advantageously em- 70 worm 33, driven through bevel gears 33 from the ployed. At either side of the tapering mandrel drive shaft 43. The bevel gears 33 are similarly .13 are supports 13 that support a conveyor system, disposed to the bevel gears 33, so that ‘the ring 7 generally 11. Referring to Figures 10 and 16, it isdrlveninthedirectlomandatthesamespeed 475 astherearwardreel. . a will be seen that the conveyors include endless chains 13 composed of overlapping links 13 that 75 .1. 3 . are secured together by relatively long pins 00 ex. strands are welded together at each of their cross tending through adjacent links. The chains 18 ‘ing points to form the fabric into a completed pass about wheels 8I adjacent the'large. end of the ' structure. Advantageously the welder may be tapering mandrel and wheels 82'at the discharge constructed as follows: Outside of each of the cam tracks 80 is an upstanding support I00 that end of the machine. The inner ends of the pins are provided with support in suitable bearings a main drive shaft slots 83, into which, the portion of a strand that is ‘ IOI extending between them. The drive shaft toform a part of the selvage edge of the fabric, _ IN is driven from the shaft 48 by means of spur gears I02, the supplemental shaft I03, bevel gears may be introduced. . I04, and a vertical shaft I05 connected with the 10 ~ The slots 83 interiorly of the pin widen ax ially as shown in Figure 18, to provide a socket 84 shaft IOI by means of any suitable type of gear with overlapping portions 85 within ,which the. ing, as at I06. vSpaced from the shaft IIII to ward the strand-laying mechanism is a second strand may be engaged. The pins 80 are revolu ble in_ the links 19 and pairs of adjacent pins are transverse shaft I01. The shafts'IOI and I01 . 15 coupled by segment gears 88. One of each pair each carries a plurality of sprocket wheels I08, 15 of pins is provided with a crank arm 81 carrying about which run sprocket chains I00 running in channels I I0 in a flat surfacedtable I I I that may be supported ‘on the shafts IIII and I01 by means of' journals I I2 that surround the shafts. The, chains I09 carry electrode bars II3 that 20 extend transversely of the machine'throughout the width of the fabric and which slide upon the swung, thus turning the adjacent pins 80 in op- ~ top of the table'III as the chains travel. The posite directions. As will be later described at bars are so spaced that each one underlies a 25 this time the strands are engaged in the sockets row of crossing points of the strands forming the , 25: 84 and this will have the effect of locking them fabric as the fabric is fed through the machine. Preferably the ‘upper surfaces of the bars are _’ into the pins. As has been previously mentioned, adjacent provided'with sockets I I4, as shown in Figure 22, links 19 of the chains 86 are relatively slidable the sockets being connected by suitable channels 30 laterally. Rearwardly of the chain 18 and spaced for the reception of the strands, the crossing 30 therefrom is a second chain 90 formed by links 9| points of which are within the sockets. The that overlap and are similar to the links 19. l The sockets are of proper size to receive the upper - at its end a roller 88. Rollers 88 engage in a cam . track 89 that runs parallel to the edge of the fab-v ric from the end of the tubular mandrel 60 to the 20 discharge end of the machine. This cam track is so-arranged thatslightly before the fabric leaves the tubular mandrel 60, the crank arm 81 will be chain 18 runs beneath a cam track 02 which is electrodes that will be later described. ers 94 that run in the cam track 92. bevel gears II6 from the shaft I05. The shaft II5 carries cams II1 that are engaged in hangers At a point spaced above the table III, the sup- channeled on its under side. The links 9| carry 35 vertical pins 93that carry on their top ends‘roll- _ ports I00 carry a rotary shaft H6 driven through 35 The‘cam track 92, as will be seen by referring to Figure 12, runs from a point toward the rear of the discharge ‘ I'I8 that support the upper electrode in the ma end of the tubular mandrel 60 toward the mandrel chine, and which operate to reciprocate the upper 60, thence parallel to the sides of the mandrel 60, to its end, then parallel to the edges of the tapered mandrel 15, to its end, and then straight for ward to the discharge end of the machine. The cam track 89 parallels the track 02. 45 , The operation of these conveyors which are duplicated on each side of the machine, is as fol-, lows: ' The horizontal motion of the pins is governed by the cam track 92" and as the pins advance from the rear end of the conveyor In the direction in which the fabric is traveled, they ?rst approach the strands which are advancing upon the tubular mandrel, and a strand enters into a slot’ in the end of each pin. At this time, due to the con?gu 55 ration of the track 89, the pins are swung, lock electrode-holding frame H8 at definite intervals 40 in timed relation with the travel of the electrode bars H3. The hangers I I8 may be provided with upwardly extending rods I20 that pass through a cross bar I2I between the supports I00, and which are cushioned by coiled springs I22. ' 45 The electrode frame II9 may comprise three transverse bars I23, I24 and I25, respectively. Electrodes I26 are slidably mounted in the lower two bars I24 and I25, these two bars being formed of insulating material. The electrodes 50 are preferably backed by springs within tubular casings I28 in order to give a ?rm but yielding . contact with the crossings of the strands which are to be. welded. Current is supplied through transformers I21 to ?exible lead rolls I28_con 55 ~ ing the strands in the ends of the pins. As the ' nected to the electrodes. The welding circuit is . fabric and conveyors advance upon the tapered so arranged that the current passes from one ‘ mandrel 15, the pins 80 are drawn outwardly. by ' electrode downwardly through the crossing point which the electrode is in engagement with, the strands in their proper relation as the top and through the‘. electrode bar, and to another one 80 bottom halves of the tubular fabric structure of the electrodes, thence through that electrode are brought together. After the fabric leaves the ' and back to the transformer. tapered mandrel 15, the travel of the pins 80 of . The conveyors 18 may be driven from the shaft the -two conveyors become parallel, and the I01‘ by means of a sprocket wheel I20 mounted 65 strands‘ are held by them in their proper relation thereon, a sprocket chain I30 and a sprocket 65 during their passage through the welder 21. ‘wheel Ill mounted upon a transverse shaft I32, the diverging portions of the tracks 02, holding After the welding operation the‘cam track‘ts swings the pins to their unlocking position, shown in Figure 18, when the pins are drawn from the fabric. _ \ _ I After the fabric has left the tapered mandrel, it is carried in its collapsed and ?attened condi tion to a welding apparatus 21, the strands being held in their proper relation to each other by the 75 pins 00 of the conveyors. In the welder the which drives the conveyor chains. _ vThe method of making this fabric essentially comprises the winding of the strands in aplu rality of layers in the form of a. reticulated tubu 70 lar structure, and thereafter ?attening the tubu- ' lar structue while holding the stands in proper relation, and thereafter welding each of the crossing points of the strands. , The fabric is illustrated in Flgures~23 and 24, 75 - 4 ‘ 2,187,257 ‘wherein it will be seen‘that the strands forming ' the outer layer of the tubular structure become the top and bottom strands of the completed fabric. These strands are labeled “top” where they cross the top of the strands, and “l” where they become the bottom strands,_these strands running back and forth across the fabric and always on the outside. The inner layers of the tubular structure become the.inner layers of the completed fabric. These strands are labeled “2” 1 wires of one layer between the crossed strands of the other layer. I 4. The method of forming an open meshed fabric of continuous crossed strands, which con sists in forming a tubular body of saidstrands and drawing opposite portions of the body out wardly to bring. initially spaced portions of the _ walls thereof between the outwardly drawn por tions together to form a. plurality of layers of strands and welding together the strands at 10 and “3", these figures indicating their relative their crossing points. order from the top layer of the fabric down wardly. The appearance of the fabric is that of 5. The method of forming an open meshed fabric, of continuous crossed strands, which con sists in laying a plurality of continuous strands in oppositely extending spiral coils to .form a a woven structure, this appearance being given by the fact that the strands pass over certain of the otherstrands and under still others of these _ tubular open mesh body of crossed spiral coils, strands. collapsing said coils in unbroken condition into From the foregoing, it is thought that the con a sheet with opposite initially spaced walls form struction, operation and many advantages of the ing a plurality of layers, locating the crossed herein described inventionwill be apparent to wires of one layer between the crossed wires of those skilled in the art without further descrip ' the other layer, welding together the strands of ' tion, and it will be understood that various changes in the size, shape, proportion and minor details of construction may be resorted to with 25 out departing from the spirit or sacri?cing any of the advantages of the invention. What I claim is: l. The method of forming an open meshed ‘ fabric of continuous crossed strands, which con 30 sists in laying a plurality of continuous strands to form a tubular body of said strands, and bring ing together spaced portions of the walls of the body to form a plurality of superposed layers of _ strands, the strands of each layer crossing those 35 of another layer. > 2. The method of forming an open meshed fabric of continuous crossed strands which con sists in layingv the strands upon a mandrel to form a tubular body of co?s, and collapsing the body to bring spaced portions of the walls there of together to form a plurality of layers of strands in which the selvage is’ formed by the wires of one layer being looped and said wires extending from said loops across both layers. 3. The method of forming an open meshed each layer at their crossing points, and welding together the strands of the different layers at their crossing points. 6. The method .of forming an open meshed fabric which consists in forming a tubular body having'a wall comprising a layer including a plu rality of sets of parallel strands, and collapsing the body to bring together spaced portions of the walls to form a ?at body of the sets of strands, 30 and welding together the strands of the di?erent layers at their crossing points. '7. The method of forming an open meshed fabric of continuous crossed strands that consists in laying a plurality of continuous strands in 35 spiral coils to form a tubular open mesh body of continuous spiral coils, and bringing together the walls of the body in unbroken condition to form a sheet composed of superposed layers compris ing respectively the initially spaced opposite layers of the body. 40 8. The method of forming an open meshed fabric which consists in forming a tubular body by successively laying sets of spirally coiled parallel strands, the strands of the respective fabric, of continuous crossed strands, which con sets being oppositely coiled, and the strands of 45 sists in laying a plurality of continuous strands each set crossing those of the next set, collapsing in oppositely extending spiral coils in the form - the body to bring portions of the spaced walls of a tubular open mesh body of crossed coils, together in superposed relation, and securing the collapsing said coils in unbroken condition into strands together at their crossing points. 50 a sheet with opposite initially spaced walls form ing a plurality of layers, and locating the crossed' HERBERT E. WHITlil.